6785641 has 4 divisors (see below), whose sum is σ = 7142800. Its totient is φ = 6428484.

The previous prime is 6785629. The next prime is 6785651. The reversal of 6785641 is 1465876.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6785641 is a prime.

It is a Duffinian number.

6785641 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6785641.

It is not an unprimeable number, because it can be changed into a prime (6785651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178551 + ... + 178588.

It is an arithmetic number, because the mean of its divisors is an integer number (1785700).

Almost surely, 2^6785641 is an apocalyptic number.

6785641 is the 1648-th centered pentagonal number.

It is an amenable number.

6785641 is a deficient number, since it is larger than the sum of its proper divisors (357159).

6785641 is a wasteful number, since it uses less digits than its factorization.

6785641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357158.

The product of its digits is 40320, while the sum is 37.

The square root of 6785641 is about 2604.9262945427. The cubic root of 6785641 is about 189.3202022429.

The spelling of 6785641 in words is "six million, seven hundred eighty-five thousand, six hundred forty-one".